Isshi (一志, December 7, 1978 – July 18, 2011) was a Japanese musician and vocalist of Japanese visual kei rock band Kagrra,. In 1998, along with musicians Izumi and Nao, he founded a Visual Kei rock band called Crow. Two years later, they signed to PS Company and changed the band's name to Kagrra,. In 2011, after the band's "demise," Isshi began working solo on shiki∞project. He was found dead in his Tokyo apartment at age 32.